/*
  * OpenH264 shared utils
  * Copyright (C) 2014 Martin Storsjo
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with FFmpeg; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <string.h>
 #include <wels/codec_api.h>
 #include <wels/codec_ver.h>
 
 #include "libavutil/log.h"
 
 #include "libopenh264.h"
 
 // Convert libopenh264 log level to equivalent ffmpeg log level.
 static int libopenh264_to_ffmpeg_log_level(int libopenh264_log_level)
 {
     if      (libopenh264_log_level >= WELS_LOG_DETAIL)  return AV_LOG_TRACE;
     else if (libopenh264_log_level >= WELS_LOG_DEBUG)   return AV_LOG_DEBUG;
     else if (libopenh264_log_level >= WELS_LOG_INFO)    return AV_LOG_VERBOSE;
     else if (libopenh264_log_level >= WELS_LOG_WARNING) return AV_LOG_WARNING;
     else if (libopenh264_log_level >= WELS_LOG_ERROR)   return AV_LOG_ERROR;
     else                                                return AV_LOG_QUIET;
 }
 
 void ff_libopenh264_trace_callback(void *ctx, int level, const char *msg)
 {
     // The message will be logged only if the requested EQUIVALENT ffmpeg log level is
     // less than or equal to the current ffmpeg log level.
     int equiv_ffmpeg_log_level = libopenh264_to_ffmpeg_log_level(level);
     av_log(ctx, equiv_ffmpeg_log_level, "%s\n", msg);
 }
 
 int ff_libopenh264_check_version(void *logctx)
 {
     // Mingw GCC < 4.7 on x86_32 uses an incorrect/buggy ABI for the WelsGetCodecVersion
     // function (for functions returning larger structs), thus skip the check in those
     // configurations.
 #if !defined(_WIN32) || !defined(__GNUC__) || !ARCH_X86_32 || AV_GCC_VERSION_AT_LEAST(4, 7)
     OpenH264Version libver = WelsGetCodecVersion();
     if (memcmp(&libver, &g_stCodecVersion, sizeof(libver))) {
         av_log(logctx, AV_LOG_ERROR, "Incorrect library version loaded\n");
         return AVERROR(EINVAL);
     }
 #endif
     return 0;
 }